Global Patent Index - EP 1260054 A1

EP 1260054 A1 2002-11-27 - VALIDATION PROTOCOL AND SYSTEM

Title (en)

VALIDATION PROTOCOL AND SYSTEM

Title (de)

VORRICHTUNG UND PROTOKOLL ZUR ECHTHEITSERKENNUNG

Title (fr)

SYSTEME ET PROTOCOLE DE VALIDATION

Publication

EP 1260054 A1 (EN)

Application

EP 01903530 A

Priority

  • AU 0100141 W
  • US 50595100 A

Abstract (en)

[origin: WO0161918A1] This invention is a validation protocol for determining whether an untrusted authentication chip is valid, or not. In another aspect it concerns a validation system for the protocol. The protocol may be used to determine the physical presence of a valid authentication chip. In this case a system may call the trusted chip to generate a random number and a digital signature for it, encrypt them with a first key and then call a prove function in the untrusted chip. The prove function decrypts the random number and signature, and calculates another signature from the decrypted random number, for comparison with the decrypted one. If the comparison is successful the random number is encrypted with another key and sent back. Finally, a test function is called in the trusted chip to generate its own encrypted version of the random number using the second key and then compare it with the received version to validate the untrusted chip. The untrusted chip may be associated with a consumable so that validation of the untrusted chip authenticates the consumable.

IPC 1-7 (main, further and additional classification)

H04L 9/32; G07F 7/08

IPC 8 full level (invention and additional information)

H04L 9/32 (2006.01); G06F 21/00 (2006.01); G06Q 20/34 (2012.01); G06Q 20/40 (2012.01); G07C 9/00 (2006.01); G07F 7/08 (2006.01); G07F 7/10 (2006.01)

CPC (invention and additional information)

G07F 7/1008 (2013.01); G06F 21/44 (2013.01); G06Q 20/34 (2013.01); G06Q 20/341 (2013.01); G06Q 20/40 (2013.01); G06Q 20/40975 (2013.01); H04L 9/002 (2013.01); H04L 9/0662 (2013.01); H04L 9/3247 (2013.01); H04L 9/3271 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

Designated extension state (EPC)

AL LT LV MK RO SI

EPO simple patent family

WO 0161918 A1 20010823; AU 2001231443 B2 20040219; AU 3144301 A 20010827; CA 2400223 A1 20010823; CA 2400223 C 20110503; EP 1260054 A1 20021127; EP 1260054 A4 20061018; EP 1260054 B1 20130410; SG 127733 A1 20061229; US 2003159036 A1 20030821; US 2004049678 A1 20040311; US 2010153729 A1 20100617; US 7685423 B1 20100323; US 7685424 B2 20100323

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2012-10-31 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G07C 9/00 20060101ALI20120926BHEP

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- IPC: G07F 7/08 20060101ALI20120926BHEP

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